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The Cancer We Can Often Prevent—If We Pay Attention

March 8, 2026

Colon and rectal cancer—often grouped together as colorectal cancer—is one of the most common cancers in adults. Here’s the good news: it’s also one of the most preventable. The bad news? Too many people avoid talking about it, avoid screening, and avoid the signs—until it’s too late. Let’s change that.…

Colon and rectal cancer—often grouped together as colorectal cancer—is one of the most common cancers in adults. Here’s the good news: it’s also one of the most preventable. The bad news? Too many people avoid talking about it, avoid screening, and avoid the signs—until it’s too late.

Let’s change that.

What Is Colon and Rectal Cancer?

Colon cancer starts in the large intestine (colon). Rectal cancer begins in the rectum, the last several inches of the digestive tract. Most colorectal cancers start as polyps—small growths inside the colon. These polyps can sit quietly for years before turning cancerous. That long timeline gives us a powerful advantage: early detection.

Why Awareness Matters

Colorectal cancer doesn’t usually announce itself loudly in the early stages. No sirens. No flashing lights. Many people feel perfectly fine—until symptoms appear, and by then the disease may be advanced.

That’s why routine screening saves lives. It finds cancer before symptoms start or catches precancerous polyps early enough to remove them completely.

Who Is at Risk?

You don’t need a family history to be at risk. Factors include:

Age 45 and older
Family history of colon or rectal cancer
Diet high in red or processed meats
Low fiber intake
Smoking or heavy alcohol use
Obesity and lack of physical activity
Type 2 diabetes
Inflammatory bowel disease

And here’s the curveball: rates are rising in younger adults, which is why screening guidelines now recommend starting at age 45 for average-risk individuals.

Warning Signs You Shouldn’t Ignore

Colon and rectal cancer symptoms are often subtle and easy to dismiss:

Blood in the stool or rectal bleeding
Changes in bowel habits (diarrhea, constipation, narrow stools)
Persistent abdominal pain or cramping
Unexplained weight loss
Fatigue or weakness
Feeling that the bowel doesn’t empty completely

If these last more than a couple of weeks, don’t “wait it out.” Get checked.

Screening: The Awkward Test That Saves Lives

Let’s address the elephant in the room. Yes, colonoscopy prep is inconvenient. No, it’s not fun. But it is far less uncomfortable than cancer treatment.

Screening options include:

Colonoscopy (gold standard)
Stool-based tests done at home
Flexible sigmoidoscopy (in some cases)

Your healthcare provider can help choose the best option. The important thing is doing something—not nothing.

Treatment Works—Especially When Found Early

When detected early, colorectal cancer has a high survival rate. Treatment may include surgery, chemotherapy, radiation, or a combination. Outcomes improve dramatically with early-stage diagnosis.

Translation: screening doesn’t just save lives—it saves quality of life.